Window frame construction



July 3, 1934. B. WILSON WINDOW FRAME CONSTRUCTION Filed Jan. 29, 1934 2 Shets'sheet l J5 i i I 'I Jmwutor fierl" WzZSam mk-MM GttornegS.

July 3, 1934. B W|LSON 1,965,165

WINDOW FRAME CONS TRUCTION Filed Jan. 29, 1954 2 Sheets-Sheet 2 IlI/IlI/Illllllllll/Illl/ 177i I Y-IHII lllll llfllllllllllllfwfi lnventor Cittorncgs.

Patented July 3, 1934 UNITED STATES NT QFFICE WINDOW FRAME CONSTRUCTION 9 Claims.

The present invention relates to window frame constructions, and has for an object to provide an improved type of window frame admitting the use of relatively narrow interior trim while employing standard stock sash weights.

Another object of the present invention is to provide as an integral structural part of the window frame an improved plaster ground for carrying out the above noted object and which insures a smooth and even interfitting between the window frame and the wall structure and which also supports the plaster about the window frame and eliminates cracks or separation between the frame and the plaster.

A further object of the present invention is to provide a window frame with a plaster ground adapted to support metal lath or the like to provide a key for the plaster at the sides of the frame, and wherein the plaster ground may be rabbeted to a depth sufficient to permit the application of the plaster into and over the rabbeted portion, so that the narrow trim may be used and the architect and designer be given a greater latitude in preparing his interior designs.

The invention also embodies certain other de tailed improvements in the construction of the window frame all of which are combined in a unitary structure wherein relatively large weights may be used in a relatively small boxing, wherein screen frames may be readily accommodated in the window frame and wherein moisture and the like entrapped behind shoulders, beads and the like of the window frame may be vented or freed so as to prevent objectionable moisture pockets.

With the foregoing and other objects in view, the invention will be more fully described hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views,

Figure 1 is a fragmentary perspective view looking at the inner side of a window frame constructed in accordance with the present invention.

Figure 2 is a vertical section taken through the same.

Figure 3 is a horizontal section taken through the window frame substantially on the line 33 of Figure 2.

Figure 4 is a fragmentary perspective view of the plaster ground employed at the inner side of the window and for receiving the plaster and its reinforcement.

Figure 5 is a fragmentary perspective view of the same showing the plaster ground for the head jamb separated from the side piece of the plaster ground.

Figure 6 is a horizontal section taken through a modified form of the window frame showing a sectional view through the center mullion of a twin or double w ndow frame, and

Figure '7 is a fragmentary inner face view of the same showing the sill portion of the double frame.

Referring to the drawings, and first to Figures 1 to 5, the invention is embodied in a window frame the sashes of which are counterbalanced in the usual manner by weights 15 disposed in the side boxes of the window frame, as shown to advantage in Figure 3. The window frame at each side comprises the post 16 from which is inwardly spaced a jamb 17 receiving the edge portions of sashes thereagainst, each jamb 17 having an intermediate stop strip 18 separating the upper and lower sashes in the usual manner. At its outer side edge the box is closed by an outside casing 19 of suitable dimensions and construction to be seated in the exterior wall of the building. The inner edge of the outside casing 19 projects beyond its adjacent jamb 17 and provides an outer stop strip 20 for confining the upper sash and which in the present instance is provided at its lower end adjacent the sill 21 with a weep groove 22 through which water and the like accumulating behind the stop strip 20 may be vented. The stop strip 20 is rabbeted or shouldered at its outer side as at 23 to receive thereagainst the rabbeted portion of a screen frame 24 or the like which may be fitted into the outer side of the window frame.

Where the window frames are relatively narrow to correspond with thin wall construction, the outside casing 19 may have at its inner face a recess or groove 25 to clear the adjacent side of the weight 15, so that the latter may freely move without frictional contact within the window box- According to the present invention the inner side of the boxing is closed by a plaster ground 26 which at its inner edge may be flush with the inner face of the jamb l? and which may extend outwardly across the boxing to any desired extent and which, as shown in Figure 3, may overlap the post 16 sufficiently to obtain the desired purchase upon the post. The plaster ground 26 is shouldered and reduced at its outer edge portion to provide a shoulder 27 against which the plaster 28 is adapted to abut, and to provide a tongue portion 29 which comprises an extension of the inner surface portion of the plaster ground 26 over which the plaster 28 is placed to provide an overlap, and the exposed surface of the tongue 29 may have lands 30 spaced apart and disposed vertically thereon to which metal lathing 31 may be secured to take anchorage in the plaster 28 and hold the same interlocked to the plaster ground. The full width portion of the plaster ground 26 may be of any desired breadth depending upon the width of inside trim 32 to be used, the trim 32 preferably projecting beyond the shoulder 27 of the plaster ground, as shown in Figure 3, to slightly overlap the plaster 28 and thus provide a sealed overlapping joint between the plaster 28 and the plaster ground.

The plaster 28 is thus effectively anchored to the window frame and is reinforced and held from separation or cracking about the window frame by means of the projecting tongue 29 and the relatively short body portion of the plaster ground 26.

The tongue 29 of the plaster ground is adapted to abut the stock wood laths 33 which support the body of the plaster 28 beyond the window frame, and the wood laths slightly overlap the post 16 and are supported thereon. Of course the wood laths 33 may be substituted by any other suitable wall structure or elements taking the place of the wood laths and which may overlap the posts 16 and abut the tongue 29.

The plaster grounds 26 are disposed at opposite sides of the window frame and at the inner face thereof, and are joined at their upper ends by a head jamb plaster ground 34 which, as best shown in Figures 4 and 5, suitably match the upper ends of the plaster grounds 26 and are provided with plaster engaging shoulders 35 forming continuations of the shoulders 27 and with short tongues 36 of a thickness equal to and matching the tongues 29.

As shown in Figure 2, the plaster 28 at the top of the window is supported upon the usual laths 33 and extends therebeyond into overlapping engagement with the tongue 36 and abuts the shoulder 35, the inside trim 32 being carried across the head of the window in overlapping relation with respect to the plaster 28 in a manner similar to that shown in Figure 3.

There is thus provided entirely about the sides and top of the window frame a plaster ground which may be of relatively narrow breadth, which has an abutting shoulder for receiving the plaster thereagainst and which is provided with the underlapping tongue engaging in the plaster and which serves to hold and unite it solidly to the window frame.

The lower portion of the window frame may be of any suitable or standard construction and is shown in the present instance as comprising the sill 21 suitably stepped downwardly and outwardly from the inner to the outer side of the casing and which is surmounted at its inner end by a stool 3'7 which overhangs an apron 38 secured against the ground or framing 39, suitable wedges 40 being employed beneath the sill to support it.

With reference to the modification shown in Figures 6 and '7, the invention is disclosed as applied to the center mullion of a twin or double hung window frame wherein the boxing comprises spaced jambs 41 between which the two sets of counter weights 42 are mounted. The outside casing 43 extends across the outer edges of the jambs and therebeyond to provide the outer stop strips 44 for the outer sashes of the adjacent windows. The jambs 41 each carry the center stop strip 45 and are provided at their inner portions with the inner stop strips 46. The plaster ground 47 closes the inner side of the boxing and is provided intermediate its ends and in its exposed face with a groove of suitable depth and width to provide body portions for the plaster ground adjacent each jamb 41 and an intermediate tongue portion 48 having lands 49 over which are secured lathing 50 in which the plaster 51 is anchored. The provision of the tongue 48 forms opposed shoulders 52 against which the plaster 51 abuts in a manner similar to that shown in Figure 3 where the plaster 28 abuts the shoulder 27. This structure admits of the use of relatively narrow inside trim 53 so that the double window frame may be finished on the interior as separate and distinct window structures and be given other suitable configuration to blend with desired designs. In the present instance the stool 54 and the apron 55 may be carried continuously across the lower portion of the plaster ground 47 or it may be given other suitable form as desired.

It is obvious that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

What is claimed is:--

1. In window construction, a frame, a plaster ground secured to the inner side of the frame and having a relatively narrow body portion and a tongue projecting outwardly therefrom for underlapping engagement with the plaster, said tongue being coextensive with the plane of the inner face of the plaster ground to provide an exterior abutting shoulder for receiving the plaster thereagainst and lathing secured to said tongue.

2. In window construction, a window frame, a plaster ground at the inner side of the window frame, said plaster ground having at its exposed face an inwardly stepped portion providing a plaster abutting shoulder and a plaster underlapping tongue and lathing on said underlapping tongue.

3. In window construction, a window frame, a plaster ground for the window frame, said plaster ground having a relatively narrow body portion for receiving inside trim and having a thin tongue extending outwardly from the inner surface portion of the plaster ground for underlapping engagement with the plaster and lathing secured to said tongue.

4. In window construction, a window frame having a counterweight boxing with. a plaster ground closing the inner side of the boxing, said plaster ground having a relatively narrow body portion adjacent the inner edge of the window and provided with an outwardly extending tongue disposed in the plane of the inner face of the ground and providing a plaster abutting shoulder, said tongue having anchoring lands on its exposed surface adapted to engage the inner side of the plaster and lathing secured to said tongue across said lands.

5. In window construction, a window frame, a plaster ground for said window frame extending about the sides and top of the window frame, said plaster ground having a relatively narrow body portion adapted to support narrow inside trim and providing a plaster abutting shoulder behind the trim, said plaster ground also having an inwardly stepped tongue extending outwardly from said shoulder for underlapping engagement with the plaster and lathing secured to said tongue.

6. In window construction, a window frame having weight boxes at opposite sides, plaster grounds mounted on the window frame for closing the inner sides of said boxes, said plaster grounds having relatively narrow body portions adapted to support narrow inside trim, reduced tongues extending outwardly from the body portions of the plaster ground in the plane of the inner surface thereof and providing plaster supports from which the plaster is adapted to be secured and providing abutting shoulders for receiving the plaster thereagainst and lathing carried by said reduced tongues.

7. In window construction, a window frame, a plaster ground mounted on the inner side of the window frame and having a narrow body portion with an abutting shoulder at its outer edge and an inset tongue extending from the shoulder, said tongue having anchoring lands on its outer face, lathing secured across said lands, said lathing and lands adapted to receive a coating of plaster thereover and said shoulder adapted to abut said plaster, the body portion of said plaster ground adapted to support a, narrow inside trim in overlapping relation to the plaster and the shoulder.

8. In window construction, a window frame having a counterweight boxing, an outside casing for said boxing projecting inwardly beyond the jamb of the boxing, said projecting portion of the outside casing being rabbeted at its inner edge for the reception of a. screen frame therein, a plaster ground for the inner side of said boxing having a narrow body portion at the inner edge of the casing to support narrow inside trim and having a reduced tongue portion extending outwardly of the boxing, said tongue portion adapted to receive a coating of plaster thereover and said body portion of the plaster ground providing a shoulder abutting plaster at the inner end of the tongue and lathing carried by said tongue portion.

9. In window construction, a double window frame having a center mullion, a plaster ground for the mullion provided with an intermediate recess forming plaster ground body portions and a connecting tongue therebetween, said tongue providing inwardly facing shoulders at the ends of said body portions and adapted to support plaster over the tongue and abutting said shoulders, said body portions of the plaster ground adapted to support independent narrow inside trim in overlapping relation to the shoulders and adjacent portions of the plaster and lathing between the shoulders.

BERT WILSON. 

